Valve.



G. WYMAN.

VALVE. APPLICATION FILED D30. 9, 1908.

918,720. Patented Apr. 20, 1909.

In ventor g WW.

" oHARLEs WYMAN, OF NEW YORK, N. Y. V

VALVE.

, Specification, of Letters Patent.

Patented April 20, 1909.

Application filed December 9, 1908. Serial No. 466,603.

To all tbhom'it may concern:

I I valve connected to a pressure tank which is 3e it known that I, CnARLEs WYMnN, a partly in cross section, with parts broken citlzen oi the United States, and a resident L away. Fig. 2 is an alternate form of valve of the borough of Brooklyn, city of New York, county of New York, and State of New York, have invented certain new and useful Improvements in Valves, of which the following is a specification.

This invention relates to valves, more particularly to inflation valves, and the objects of the invention are to provide an inflation valve forv use upon pressure tanks made to contain air or gas under high pressure for the purpose of inflating automobile tires.

The pressure tank above referred to is of convenient size to attach to the bodyof an automobile and is madesuflicient'ly strong to hold a gas, usually carbonic acid gas,

under a pressure of several hundred pounds. From this pressure tank the tires of the' automobile are inflated to a pressure much less than the original pressure in the pressure tank and for this purpose an inflation valve is used. The valve must be one that will work easily when it is desired to inflate the tires, and also prevent escape from the tank when the tires are not being inflated.

To the accomplishment of the above objects, and such others as may hereinafter appear, the invention comprises a main va ve member provided wit an inlet or charging duct leading to a suitable valvechamber within said member, a further duct leading from said chamber and adapted to convey the air to or from the storage tank, a valve controlling the passage of air or gas from the charging duct to said valve chamber, and another duct leading from said,

chamber to an orifice in a raised boss located within a bonnet chamber formed in said main section of the valve; andgfurthercomprises a valve bonnet adaptedto be secured in said bonnet chamber and provided with an internal passage within which is a springpressed valve plug ada tedto coact with said projecting boss, an a valve stem and s ring fd ower; said bonnet also having ucts leading from such internal passage, one such duct adapted to lead to the pressure gage with which such valves are commonly provided, the other leading to a' discharge connection. a

Referring to the drawings: Figure 1 is a side elevation showing the inflation valve in cross section, and also showingthe inflation gland consists of apointed valve stemvF the pointed end of which is adapted to close the charging duct C, a suitable valve seat G being rovided for this purpose. The valve stem 1 is provided with suitable threads H which are arranged to engage corresponding threads in v the main valvemernber, which 1s also provided with a suitable recess J for packing, in which is adapted to fit the'gland K. The main valve member is also provided with a duct L one end of which is connected to the chamber D and the other end of which terminates in a raised boss M located within a bonnet chamber M formed in said main valve member to which is secured a valve bonnet N provided with an internal assage 0 within which is a spring resse valve plug P, ada ted to'coact wit said'raised oss M, an a spring Q, together with a spring follower R and a valve stem S, which is provided with suitable threads T arranged to fit corresponding-threads in the bonnet which is also provided with a suitable recess U for acking in which is adapted to fit the V. The bonnet- N is also provided with ducts W and X leading from said internal passage 0, theduct X being in communication with a suitable pressure gage Y while the duct W leads to a suita le dischar e connection Z to which can be secured a suitable. flexible connection for inflating the tires.

From the above construction it will be seen that the ressuretank A can be char ed through the ucts C and E by unscrewing the valve stem F which is screwed. into posi- ,H which never fit tight enough so as to prevent the gas passing through the same, so that when it is desired to inflate the tires the valve stem S is unscrewed so as to release the pressure of the spring Q against the valve plug P which engages the end of the ductL in the raisedboss M and the gas passes into the chamber 0 and out through the duct W the pressure of the air being discharged into the tire being recorded by means of thegage.

Y so that when the tire is inflated to a certain pressure ,the valve stenrS is screwed down so as tor-force the valve plug P against the raised boss Mso as to. close the duct L.

The end of the valve lug P is preferably provided with a piece'o vulc'anite or other similar substance a so as to rovide a suitable seatffor-the end of raise bossM. The,

valve plug P is also preferably provided with a needle 12 which'lisgadapted to center the plug in the duct L and to restrict the escape of the fluid from this duct when the plug is raised off' its seat, it being noted that the needle 5 does not entirely fill the duct L, there being a very small space around the I .needle to permit of the escape of the fluid when the plug is raised. The needle I) is also very advantageous in keeping the duct L free from dirt, ,grit and ice.

From thelabove description it will be seen that a .very simple inflation valve is proi vided which is provided with two independcut valves, one used for'charginlg and the other for discharging the gas. t will be seen that the valve forcharging is made large so that the tank can be easily filled whereas thedischarge valve is made small so as to more readily regulate the escape of the gas. The discharge valve is so constructed that the same can be used a great many times without being re aired and the same works very easily. In ig.'2 is shown an alternate vform of valve plug- P in which the needle b ber, an inlet duct therefor, a. supply duct communicating with said inlet duct, a main valve controlling communication between said inlet and supply'ducts, a delivery duct communicating with said inlet duct, a valve seat and a sliding plug valvecontrolling said delivery duct, one having a raised boss for coacting with the other, a spring for said sliding valve plug, means for compressing said sprmg, and a discharge connection provided with a duct communicating with said diswhich one of said other ducts terminates, and

a valve bonnet engaging said bonnet-connection, said bonnet having an internal passage, a valve plug slidably mounted within said passage and adapted to close the orifice of the duct in said boss, a spring for said plug and means for compressing said spring, said bonnet having a discharge connection provided with a duct communicating with said passage in rear of said valve plug.

3. An inflation valve comprising a main valve member provided with a valve chamber, an inlet duct therefor, and two other ducts leading from said chambers, and a valve closing said inlet duct, said main valve member having a bonnet connection and a raised boss within such connection in the end of which one of said other ducts terminates, and a valve bonnet engaging said bonnetconnection, said bonnet having an internal passage, a valve plug slidably mounted Within said passage and adapted to close the orifice of the duct in said boss, a spring for said plug, and means-for compressing said spring, said bonnet having a discharge connection providedwith aduct communicating with said passage in rear of said valve plug and having also a gage connection having a duct likewise communlcating with said passage in rear of said valve plug.

4. An inflation valve comprising a main valve member provided with a valve chamber, an inlet duct therefor, and two other ducts leading from said chamber, and a valve for closing said inlet duct, said main valve member having a bonnet connection and a raised boss within such connection in the end of which one of said other ducts terminates, and a valve bonnet engaging said bonnetconnection, said bonnet having an internal passage, a valve plug having a soft face adapted to engage the end of said boss and thereby close the orifice therein, a spring for s d plug and means for compressing said spring, said bonnet having a discharge connection provided with a duct communicating with said passage in rear of said valve plug.

In testimony whereof I have signed tlns specification in the presence of two subscribing witnesses.

CHARLES WYM AN.

Witnesses:

LEO J. MATTY, PAUL H. FRANK. 

